Control for fluid-fuel burners



Aug. W, 192% 1,550,047

G. REMNSNIDER CONTROL FOR FLUID FUEL BURNERS Filed April 9, 1925 v 2 sheets-sheet 1 w v p a: w m 0 1* N w 07m P4 w a H M4 W4 IN m m N v on I 1| N v TM.

INVENTOR G.R MNSNIDER ATTORNEY Aug; l8, W25. 1,550,047

- ca. REMNSNIDEIR CONTROL FOR IIFLUID FUEL BURNERS 2 Sheets-Smut 2 I Filed April 9, 1925 so 53 as INVENTOR GmREMNSNIDER J jBY Jij/ Patented Aug. 18, 1925.

' UNITED STATES GEORGE REMNSNIDEB, OF BELLEVILLE, ILLINOIS.

CONTROL FOR FLUID-FUEL BURNERS.

Application filed April 9, 1925. Serial No. 21,784.

To all whom it may concern: I

Be it known that I, GEORGE REMNSNIDER, a citizen of the United States of America, residing at the cit-y'of Belleville, county of St. Clair, State of Illinois, United States of America, have invented a certain new and useful Control for Fluid-Fuel Burners, of which the following is such a full, clear, and exact description as will enable anyone skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, forming part of this specification.

My invention relates to a control device for liquid fuel burners and particularly to that type of control device in which the overflow of fuel from the burner is utilized to cause suitable mechanism to close the supply valve and thus cut off the supply of fuel.

The object of my invention is to provide a device of the class referred to which will be positive and reliable in action, and in which it will be impossible to reset the supply valve closing mechanism without not only draining the overflow tank, but also properly closing the tank drain valve.

In the accompanying drawings, which illustrate one form of control device made in accordance with my invention, Figure 1 is a side view partlyin section; Figure 2 is an enlarged section taken on the line 22 of Figure 1, together with a diagrammatic representation of a burner to which the device is applied; Figure 3 is a sectional detail view of the diaphragm; Figure 4 is a detail view of the drain valve handle; Figure 5 is a section taken on the line 5'5 of Figure 6; and Figure 6 is an enlarged side view of the upper portion of the device, similar to Figure 1 but showing the parts in difi'erent position.

The base indicated at 10 is preferably made in the form of a shallow pan and carries an upright 11 passing through a lug 12 on a casing 13which forms the overflow tank of the device. Situated in the tank 13 is a float 14 provided with a stem 15 exchamber 20 supplied from any suitable source through pipe 21. Leading upwardly from the chamber 20 is a fuel passage 22 termlnat-ing at its upper end in a conical valve seat.

Situated. between the ports 18 and 19 of the valve casing is a corrugated resilient diaphragm 23 (shown in detail in Figure 3) having an upturned flange 24. This flange is clamped between the parts 18 and 19, as best shown in Figure 2, so as to form a liquid t1ght ]01I11',. Extending through a central openmg in the diaphragm is the reduced part of a valve stem 25 terminating in a conical valve 26 of proper size and shape to cooperate with the valve seat above referred to. The upper end of the stem 25 pro ects through the part 19 and is provided with an annular groove 27 adapted to be engaged by a lifting lever. The diaphragm is preferably sprung upward slightly, as shown in Figure 3, so that the resilience of the diaphragm acts as a spring to assist in holding the valve in raised position. I find that by this construction a diaphragm of greater thickness and consequent durability can be used than would be otherwise practicable. The valve stem is secured to the diaphragm by any means insuring a liquid tlght ]o1nt, preferably by a collar 28 maklng a pressed or driving fit with the reducedpart of the stem.

Formed on the upper face of the part 19 are a pair of lugs 30 between which is pivoted a lifting lever 31 provided at itsouter end with a weight 32 and, at the inner end with a pair of pins 33 adapted to engage the groove 27 in the valve stem 25. Threaded 1n the weight 32 is an adjustable stop 34 adapted to limit the downward movement of the lever by coming in contact with (a housing 35 carried on the cover 17. Secured to the main part of the housing 35 b screws entering lugs 36 is a separable part 3 shown removed in Figures 1 and 6. Pivoted to the lever 31 at point 38 is an arm 39 the position of which relative to the lever may be varied by adjusting screws 40. The

upper end of the arm 39 normally bears against a pin 41 on a control arm 42 pivotally mounted on a stud 43 carried by the housing 35. Arm 42 is provided with a weight 44 tending to move the inner end of the arm down and thus decrease the amount of lift of the feed valve and the consequent flow of fuel. A finger 45 on arm 42 cooperates with a scale 46 to indicate the amount of fuel feed. The arm 42 may be frictionally locked in any desired position by cam*-lever 47 on the stud 43. When, how ever, the device is used in connection with a thermostat the cam lever is moved to release position and the cam controlled by a chain or cord 48 from the thermostat attached to an adjustable extension 49 of the lever. A screw 72 forms an adjustable stop for limiting the movement of the arm 42 in the dire: tion to close the feed valve.

In addition to the arm 39 the lever 31 is provided with a second arm 50 pivoted to the lever at point 51 and movable with relation to the lever by adjusting screws 52. The downwardly curved end of the lever 50 is adapted to be engaged by a cam face on a lever 53 pivoted at 54 between a pair of lugs 55 on the upper part of the valve casing. This lever 53 is provided with a weight 56 which furnishes the motive power to close the feed valve when allowed to drop into the position shown in Figure 6. Extending downwardly from the lever 53 is a rod 57 the end of which is adapted to be engaged by a detent 58 on a trip arm 59 pivoted at point 60 to one of the feet of the valve casing 18. The trip arm 59 extends over the float stem 15 and terminates adjacent to the stem 61 of a plug valve 62 which is used to drain the tank 13. Valve 62 is opened and closed by means of a finger piece 63 the hub 64 of which is provided .with a notch 65 adapted to receive the end of the arm 59 (Figure 4) when the parts are in normal position and thus prevent the opening of the drain valve until the arm is lifted, as shown in Figure 6. The upper face of the hub also forms a bearing surface for holding the arm in raised position when the drain valve is open.

The fuel suppliedthrough the pipe 21 enters the chamber 20 and thence passes up through the opening 22 into a chamber 66 formed in the feed valve casing betweenthe diaphragm, the amount of flow being regulated by the openin of the feed valve. The fuel passes from tie chamber 66 through pipe 67 to the burner, represented diagrammatically at 68 in Figure 2. Any overflow from the burner, caused either by the flame being extinguished, or by failure of the burner to consume the fuel as fast as su plied, is conducted by return pipe 69 to t e overflow tank 13. Formed at the edge of the tank cover 17 is a flange 70 so as to convert the cover. into a shallow dish to collect any possible leakage fluid from the feed valve casin and such leakage will enter the tank t rough opening 71 preferably formed beneath the feet of the feed valve casing so that the feet will protect the open- 4 ing from clogging.

The operation of my device is, briefly as follows:

The parts being in the position shown in Figure 1, fuel enters through pipe 21, passes up through the opening 22, the amount befloat 14 will rise and its stem 15 will move the trip arm. 59 into the position shown in Figure 6. This will release the rod 57 and allow the weighted lever 53 to drop into the position shown in this figure. Contact of the cam face of lever 53 with the end of the arm 50 will move the lever 31 on its pivot and close the feed valve, thus cutting off the feed supply. The device will now remain inoperative until the overflow tank is drained by opening the drain valve 62 which can now be done as the arm 59 is raised out of the notch 65. When the valve 62 is opened the upper face of the hub 64 will be moved under the end of the arm 59 so that the arm will not return to normal position after the tank is drained and consequently the parts cannot be reset until the valve 62 is closed. Resetting of the parts is accom-.

float in said tank controlling said valve closing mechanism, and a drain valve for said overflow tank, said drain valve having interlocking connection with said valve closing mechanism.

2. In a device of the class described, the combination with a valve, of means'normally holding said valve open, closing mechanism for said valve, an overflow tank, a float in said tank controlling said valve closing mechanism, and a drain valve for said overflow tank, said valve closing mechanism when in normal position preventing the openi of said drain valve.

3. In a evice of the 013$ described, the combination with a valve, of means normally holding said valve open, closing mechanism for said valve normally held out of 4. In a device of the class, described, the combination with a fuel control valve, of an overflow device comprising means for closing the fuel valve, a drain valve for the overflow device, and means dependent on the position of the drain valve .for controlling the fuel valve controlling means.

5. In a device of the class described, the combination witha valve, of a lever normally holding said valve open, a second lever cooperating with said first named lever to close the valve, a trip arm normally holding said second named lever in inoperative position, an overflow tank, a float in said tank for actuating said trip 1 arm, and a drain valve for said tank, said trip arm when in normal positionpreventingthe opening of said drain valve. l

6. In a device of the class described, the combination with a valve, of a lever normally holding said valve open, a second lever cooperating with said first named lever to close the valve, a trip arm normally holding said second named lever in inoperative position, an overflow tank, a float in said tank for actuating said trip arm, and a drain for said tank, said drain valve when open holding said trip arm in position to prevent the resetting of said second named lever.

7 In a device of the class described, the combination with a resilient corrugated diaphragm sprung into convex form, of a valve carried by said diaphragm and norm-ally held open by its spring, a weighted lever cooperating with said diaphragm to hold the valve open, and float controlled means for closing said valve.

8. In a device of the class described, the combination with a diaphragm, of a valve carried thereby, a weighted lever for holding said valve open, means for limiting the throw of said lever and the consequent amount of valve opening, a second weightedlever cooperating with said first named lever to close the valve, a trip arm normally holding said second named lever out of operation, an overflow tank, and a floatin said tank for actuating said trip arm.

9. In a device of the class described, the

combination with a diaphragm, of a valve carried thereby, a weighted lever for holding said valve open, means for limiting the throw of said lever and the consequent amount of valve opening, a second weighted lever cooperating with said first named lever to close the valve, a trip arm normally holding said second named lever out of operation, an overflow tank, a float in said tank for actuating said trip arm, and a drain valve for said tank, said drain valve having interlocking connection with said trip arm. t

10. In a device of the class described, the combination with a diaphragm, of a valve carried thereby, a weighted lever for holding said valve open, means for limiting the throw of said lever and the consequent amount of valve opening, a second weighted lever cooperating with said first named lever to close the valve, a triparm normally hold-' ing said second named lever out of operation, an.- overflow tank, a float in said tank for actuating said trip arm, a drain valve for said tank, and a handle for said valve, said handle having a notch to receive said trip lever when'in normal position and thus prevent the opening of said drain valve.

11. In a device of the class described, the combination with a diaphragm, of a valve carried thereby, a weighted lever for bold ing said valve open, means for limiting the throwof said lever and the consequent amount of valve opening, a second weighted lever cooperating with said first named lever to close the valve, a trip arm normally holding said second named lever out of operation,an overflow tank, afloat in said tank for actuating said trip arm, a drain valve for said tank, and a handle for said valve, said handle having a notch to receive Said trip lever when in normal position and thus prevent the opening of said drain valve and also having ,a bearing face to hold the trip arm out of operative. position when said drain valve is open.

12. In a device of the class described, the combination with a diaphragm, of a valve carried thereby, a weighted lever for holding said valve open, an adjustable arm carried by said lever, a regulating arm cooperating with the arm on-said lever, a second adjustable arm carried by said lever, a second weighted lever cooperating with said second named arm to close the valve, and an overflow controlled trip arm governing said second named lever.

13. In a device of the class described, the

combination with a diaphragm, of a valve for locking said regulating arm in position,

a second adjustable arm carried by said lever, a second Weighted lever cooperating with said second named arm to close the valve, and an overflow controlled trip arm governing said second named lever.

14;. In a device of the class described, the combination with-a diaphragm, of a valve carried thereby, a weighted lever for holding said valve open, an adjustable arm carried by said lever, a regulating arm cooperating with the arm on said lever, means for locking said regulating arm in position, a .second adjustable arm carried by said lever, a second weighted lever cooperating with second named arm to close the valve, a trip arm governing said second named 1 lever, an overflow tank, a float in said tank for actuating said trip valve for said tank, sald drain valve having interlocking connection with said trip arm.

15. In a device of the class described, the combination with a valve, of means normally holding said valve open, closing mechanism for said valve, an overflow device. for controlling said valve closing mechanism, and a drain valve for said overflow device, said drain valve having interlocking connection with said valve closing mechanism.

16. In a device of the class described, the combination with a fuel control valve, of a ,lever normally holding said valve open, a

regulating arm cooperating'with said lever to determine the maximum opening of the valve, said lever being capable of movement independently of the arm to close the valve,

arm, and a drain.

a second lever cooperating with said first named lever to close the valve, and an overflow device for releasing said second named lever.

17 In a device of the class described, the combination with a fuel control valve, of a lever normally holding said valve open, an adjustable arm on said lever, a regulating arm cooperating with said adjustable arm to determine the maximum opening of the valve, said lever and adjustable arm being capable of movement independently of the regulating arm to close the valve, a second lever cooperating with said first named lever to close the valve, and an overflow device for releasing said second named lever.

In testimony whereof, I have hereuntoset my hand this the 6th day of April, 1925.

GEO. REMNSNIDER. v[ 

